Gentoo Linux Jail image does not allow for emerging.

Description

Gentoo Linux Jail image in warden does not appear to allow for basic gentoo functions (such as using portage).

!!! Invalid PORTDIR_OVERLAY (not a dir): '/usr/portage'
!!! main-repo not set in DEFAULT and PORTDIR is empty.
!!! /etc/portage/make.profile is not a symlink and will probably prevent most merges.
!!! It should point into a profile within /usr/portage/profiles/
!!! (You can safely ignore this message when syncing. It's harmless.)
!!! Your current profile is invalid. If you have just changed your profile
!!! configuration, you should revert back to the previous configuration.
!!! Allowed actions are limited to --help, --info, --search, --sync, and
!!! --version.

As there's really no information on the wiki regarding this, I can only assume there's something wrong with the default gentoo image used.